Assigning dma channels for isa cards, Upgrade guide – Asus P/I-P55SP3AV User Manual

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upgrade Guide

Any PCI expansion cards that need to use an IRQ have one au

tomatically assigned from the IRQs remaining after Legacy and PNP

ISA cards have had theirs assigned. In the PCI bus design, the BIOS

automatically assigns an IRQ to a PCI slot that has a card installed

which requires an IRQ. When installing a PCI card, you need to set
something called the "INT" assignment. Since all the PCI slots on this

mainboard use "INTA#", you only need to make sure that any PCI

card you install is set to INT A.

Assigning DMA Channels For ISA Cards

Some ISA cards, both Legacy and PNP may also need to use a

DMA (Direct Memory Access) channel. DMA assignments for this
mainboard are handled the same way as the IRQ assignment process

described above. If you don't use an ICU program, you can select a

DMA channel in the "PCI/PNP & Onboard I/O Setup" section of
the BIOS Setup utility.

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